Question about 2004 Volvo S40
When you disconnect your battery and then reconnect it again, it disables the radio. This is an anti-theft protection for your car radio.
The enable your radio the activation code is in your vehicle owner's manual. If you do not have this code you need to go to your Volvo service centre and get them to enter this code for you.
Posted on Oct 27, 2012
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Posted on Jan 02, 2017
Hello there. I have a Volvo V70 that I bought recently and it had the same problem. I left the ignition switched on for about two hours and after that time the reading had changed from OFF to Code. I then entered the code and Hey Presto It worked. When I purchased the car it too had no code. I went to a Volvo Dealership, with proof of ownership of the vehicle i.e. Log Book and proof of ID , I used my Passport, and they gave me the radio code.The only dowside was I had to pay them £10 for this code but I feel it was worth it. I suggest you try this too. Good Luck.
Posted on Jun 17, 2009
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